Custom Interior Design
Develop cohesive residential interiors for remodels, new construction, additions, and alterations, emphasizing timeless elegance, environmental responsibility, occupant health, and carefully considered materials.
Choosing the right interior design architect means finding a partner who understands your vision, coordinates design details, and guides the project with care. Ortiz Mexia Projects, Inc. creates timeless, elegant residential environments across Los Angeles and Colorado’s Roaring Fork Valley, integrating architecture, interiors, custom cabinetry, furniture, sustainability, and immersive VR tools into a cohesive design experience.

Explore integrated residential design services spanning architecture, interiors, custom elements, remodeling, and project guidance.
Develop cohesive residential interiors for remodels, new construction, additions, and alterations, emphasizing timeless elegance, environmental responsibility, occupant health, and carefully considered materials.
Plan single-family homes and residential buildings up to four units, with architectural design, permitting support, contractor coordination, and guidance through construction completion.
Reimagine existing residences through coordinated design, permit procurement, construction oversight, and project guidance from the initial concept through completion.
Create integrated cabinetry and built-in elements that bring practical storage, durable craftsmanship, sustainable systems, and aesthetic continuity to residential spaces.
Design individual furniture pieces and integrated furnishings that connect fine-art sensibility with architecture, durability, environmental responsibility, and lasting visual character.
Use immersive virtual presentations and three-dimensional models to help clients experience proposed spaces and understand design decisions throughout the architectural process.
The right interior design architect brings visual direction and practical coordination together. Ortiz Mexia Projects, Inc. connects architecture, interiors, furniture, cabinetry, built-ins, permitting, and construction guidance within a unified practice. For residences in Los Angeles or Colorado’s Roaring Fork Valley, the studio uses sustainable thinking, detailed craftsmanship, and AI and VR tools to help clients make informed, enduring design decisions.

A design-led practice for clients seeking cohesive, enduring residential environments.
Coordinate architecture, interiors, furniture, cabinetry, and built-ins through one cohesive design practice.
Create elegant spaces designed for lasting visual and physical value rather than fleeting trends.
Use AI and VR workflows to help clients understand and engage with proposed spaces.
Support projects across Los Angeles and Colorado’s Roaring Fork Valley with locally responsive coordination.
Led by Santiago Ortiz, an architect and fine arts graduate with a refined residential focus.

Assoc. AIA, Principal
Santiago Ortiz is the founder and principal of Ortiz Mexia Projects, Inc., an architecture and design practice serving Los Angeles and Colorado's Roaring Fork Valley. Born and raised in Colombia, Santiago moved to Providence, Rhode Island, to pursue his passion for design, graduating from the Rhode Island School of Design in 1999 with degrees in Architecture and Fine Arts. After relocating to Los Angeles, he honed his craft at small architecture firms specializing in high-end custom residences and boutique commercial spaces before founding his own practice in 2006. Santiago is an Associate Member of The American Institute of Architects and brings a timeless, elegant sensibility to every project, from custom furniture and built-ins to full-scale residential construction. His work has been featured in Interior Design Magazine and the Los Angeles Times, reflecting his commitment to thoughtful, well-crafted design.
Interior design architects shape how a space looks, functions, and connects to the broader building. Their work may include spatial planning, materials, furnishings, cabinetry, built-ins, lighting coordination, architectural design, permitting support, and construction guidance. An integrated practice can coordinate these elements so the interior character supports the home’s architecture, environmental goals, practical needs, and long-term use.
Talk with the studio about your goals, property, and preferred project scope.
Ortiz Mexia Projects, Inc. serves residential clients across Los Angeles and Colorado’s Roaring Fork Valley.
Los Angeles, CA
Primary Service Area
Roaring Fork Valley
Additional Region
By Appointment
Availability
Share your location and project goals to discuss fit and availability.
Professional membership with The American Institute of Architects
Project work recognized through design publication coverage
Practice and project work featured in local media
Tell us about your property, priorities, and project scope to begin a thoughtful conversation.
For immediate assistance, feel free to give us a direct call at +1 (310) 600-0241.
For immediate assistance, feel free to give us a direct call at +1 (310) 600-0241.